kalymos
10a054d60c
BIOS Patching: Finalizing ISR-based logic for timing stability
...
Re-implemented Hardware ISR (INT0/INT1): Restored interrupt-driven pulse counting to eliminate polling jitter. Tests confirmed that at 16MHz, software polling is too inconsistent for reliable DATA OVERDRIVE synchronization.
Mechanism Freeze: The core logic (Stabilization -> Silence Detection -> ISR Counting -> Injection) is now finalized and stable.
Portability Note: Maintained a clean structure to allow future non-ISR porting, although the ISR version remains the mandatory standard for ATmega328P @ 16MHz performance.
2026-03-15 21:03:56 +01:00
kalymos
83125594f3
Update BIOS_patching.h
...
@greptile
2026-03-14 23:23:41 +01:00
kalymos
d0ab3f4322
Merge branch 'PSNee-8.7.0' of https://github.com/kalymos/PsNee into PSNee-8.7.0
2026-03-14 22:45:02 +01:00
kalymos
4a7a429a92
Refactor BIOS patching logic and clean up codebase
...
New 2-phase sync (Stabilization + Silence detection).
Refactored GPIO macros for faster execution.
Cleaned up SCPH model definitions and fixed backslash warnings.
Removed unused global variables to save RAM.
2026-03-14 22:44:57 +01:00
kalymos
1d7548b027
test BIOS patching functionality
2026-03-08 12:01:12 +01:00
kalymos
6fd0f51cfa
replace fixed BOOT_OFFSET_MS with Target Memory Window detection
...
Improved boot synchronization reliability
2026-03-05 22:59:53 +01:00
kalymos
371db21eae
Implement silence detection in BIOS patching
...
Replaced fixed delay with silence detection mechanism to improve responsiveness.
2026-03-05 20:46:27 +01:00
kalymos
062e6023c0
refactor: fine-tune BIOS patch
2026-03-04 21:27:50 +01:00
kalymos
0065df0110
mor test
2026-03-02 22:25:04 +01:00
kalymos
0ff2612c7c
Refactor: Optimization of board detection, injection logic, and global nomenclature
...
- Board Detection: Added 300ms stabilization delay to filter PU-7/20
power-up noise and sync with PU-22+ oscillating signals.
- Injection: Added conditional break to allow single-region selection
and updated WFCK modulation for 7.3/14.6 kHz compatibility.
- Logic: Optimized sector filtering using bitmask (0xD0) and improved
hysteresis tracking for Standard and SCPH-5903 models.
- Code Quality: Standardized nomenclature (subqBuffer, hysteresis,
pulseCounter) and added comprehensive English documentation.
- Performance: Reduced binary size by optimizing loops and variable types.
2026-03-01 19:03:32 +01:00
kalymos
11299a9c34
obtimisation
2026-02-28 19:46:25 +01:00
kalymos
10d2310103
The BIOS patch functionality changes will be deferred to a later version.
2026-02-23 19:21:29 +01:00
kalymos
c9b76ed325
BIOS patche neo SCPH-3000 SCPH-1000
...
I finally completed the value conversion for the BIOS patch without IRS
2026-02-20 21:45:08 +01:00
kalymos
045a7ca532
BIOS patch neo SCPH-5000 SCPH-3500
2026-02-18 21:39:48 +01:00
kalymos
32e3f26712
BIOS patche neo for SCPH-9000_7500 SCPH-7000 SCPH-5500
2026-02-17 22:09:30 +01:00
kalymos
64539aac03
BIOS patch simplification
...
Removal of ISR and reduction of code in the BIOS patch, for improved portability and robustness.
For now it is only available for the SCPH-100 and 102.
2026-02-16 20:47:07 +01:00
kalymos
fc86f8b951
Refactor pulse counting logic for jitter reduction
2026-02-15 21:24:31 +01:00
kalymos
89dfc829ee
test neo BIOS patch
2026-02-15 20:52:21 +01:00
kalymos
b29ea35d15
test refactor: optimize PS1 patch for SCPH-100 using zero-latency polling
...
Ported the BIOS patch from ISR to manual polling to achieve cycle-accurate
precision for 33.86MHz bus timing.
2026-02-12 22:06:03 +01:00
kalymos
f7bf40ea6b
refactor: optimize BIOS patching sequence with refined timing nomenclature
...
Refined the BIOS patching and standardized
timing nomenclature for better technical clarity.
Changes:
- Ad technical documentation within the code.
- Standardized timing variables for better clarity:
- BOOT_OFFSET: Replaces initial checkpoint.
- FOLLOWUP_OFFSET: Replaces initial checkpoint2.
- PULSE_COUNT: Replaces trigger .
- BIT_OFFSET: Replaces hold .
- OVERRIDE: Replaces patching.
2026-02-12 18:49:02 +01:00
kalymos
a4cbbcb66b
removal of the TIMER
...
removal of the ISR(CTC_TIMER_VECTOR) function, and all its dependencies.
- Timer_Start
- Timer_Stop
modification
- Board detection
- inject_SCEX
- BIOS_PATCH
- MCU
- Setting
2025-12-21 19:30:30 +01:00
kalymos
9c5b91feba
clining
2025-08-23 19:13:17 +02:00
